Shortly after rescuing thousands of prisoners of war from the Cetagandans (as detailed in the novella "
Borders of Infinity"), Admiral Miles Naismith and his Dendarii mercenaries arrive on Earth, fleeing Cetagandan retribution and needing to repair the resultant damage to their ships. Miles visits the Barrayaran Embassy in London to obtain desperately needed payment for their last mission. He reports to Captain Duv Galeni, his Imperial Security superior and a Komarran whose aunt was one of the victims of an infamous massacre of civilians allegedly committed by Miles' father. As the funds will have to come from the nearest sector headquarters in another star system, Miles resumes his real identity as Lieutenant Vorkosigan and is assigned to the embassy as third assistant military attaché, under Galeni's command. He finds his cousin Ivan Vorpatril is the second assistant attaché. Galeni later mysteriously disappears. During his wait, Miles has to frantically fend off financial disaster due to the Dendarii not being paid. Then he is abducted, and his place taken by a clone created and trained as an assassin by Komarran diehards determined to free their planet. The Komarrans are led by Ser Galen, Galeni's own father, who had been presumed killed while fighting against the Barrayaran occupiers. Miles is locked up with Galeni, who has been interrogated using drugs, but has resisted his father's attempts to get him to join the Komarran resistance. Miles himself is given a dose of fast-penta, a
truth drug, but his reaction to it is idiosyncratic. Instead of docilely answering all questions, he becomes manic; he finds that he can beat the drug by flying off on wild tangents, such as reciting military manuals, poems and plays from memory. Meeting his clone, Miles tells him that he could claim his rights as Miles' brother under Betan law. Just before Miles and Galeni are to be executed, they are inadvertently rescued by his Dendarii subordinate (and lover) Elli Quinn. Galen captures Vorpatril and uses him to force a tense meeting in the bowels of the
Thames Barrier with Miles, who unexpectedly brings along Galeni. Galen disarms them, then orders the clone to kill Miles. However, the talks Miles has had with his clone bear fruit. The clone shoots and kills Galen instead, then flees. Complicating matters are Cetagandan and Barrayaran assassination squads (targeting Naismith and the clone, respectively), a Dendarii contingent and the local police, all converging on their location. Miles, with his usual tactical wizardry, is able to get himself, his clone, Vorpatril and Galeni safely away. As an added bonus, Miles arranges for the Cetagandans to see him and his clone together, "proving" that Naismith and Vorkosigan are not the same person. (It is revealed that Galen intercepted all messages to sector headquarters, explaining both the lack of payment and Miles' assignment on Earth.) Miles is well aware his Betan mother would be greatly displeased if he did not help what she would consider his sibling. According to Barrayaran tradition, his brother would be named
Mark Pierre Vorkosigan. Miles gives the psychologically scarred "Mark" a considerable sum of money and an invitation to claim his Barrayaran heritage, if he wants to—or dares—then lets him go. As Miles prepares to depart Earth, his Dendarii mentor, Ky Tung, announces his retirement. ==Reception==